What are the options?
Is there any under the question?
Answer: The answer choice I will go with is B. Gertude is opening up the possibility that Ophelia did not kill herself.
1. Inclined
Inclined means to be favorable towards something. In this sentence Jacob is not inclined or not in favor of switching spots with anyone else in the car.
2. incisive
Incisive means cutting (think incision like in surgery). In this case the word biting is the context clue that tells us incisive, or cutting, would be the best fit.
Joy is probably the best synonym for this word.
Hope this helps!